I have just bought a used 2006 Dodge charger police package with a 3.5l V6 and i am currently having problems with the Gear indicator, it does not show anything when i turn on the car and i am currently having a problem with the rear doors of my car i have turned off the safety lock on the back...

So the owner before me really jacked up the audio wiring on this car. After purchasing, I looked in the trunk and noticed remnants of an aftermarket system (sub, amp, high-gauge wiring, etc). The wiring was "sort of" hidden and then I noticed the liner in the trunk below the rear-deck speakers...